Molding apparatus including conically-shaped compacting member

ABSTRACT

A device for compacting or forming pourable, compactable or moldable materials which are molded in a molding box or mold, comprises a mold which is supported over a planar surface by means of an extensible and retractable fluid pressure driven piston. The mold is movable relative to a compacting member which is mounted on a rotatable shaft which is disposed at an angle to the normal to the surface of the mold. The member has a conical bottom surface about which it is wobbled, by a drive connection from a motor through a crank connected to the shaft, while the surface is positioned on the surface of the material being formed in the mold during operation. The motor which carries the member is adjustably mounted for movement toward and away from the mold and a stop is provided for engagement with the member to prevent its rotation during its movement.

United States Patent Hiiberle Dec. 9, 1975 FOREIGN PATENTS OR APPLICATIONS 335,903 4/1921 Germany 425/468 [76] Inventor: Wilhelm Hiiberle, Industrie elande, Prima ExaminerRobert D. Baldwin g 7481 Scheer, Wurttemberg, Assistant Examiner-John McQuade Germany Attorney, Agent, or FirmMcGlew and Tuttle [22] Filed: July 5, 1974 [21] Appl. No.: 486,066 [57] ABSTRACT A device for compacting or forming pourable, com- 30 Foreign Application priority Data pactable or moldable materials which are molded in a Sept 29 1973 German 2349132 molding box or mold, comprises a mold which 1s sup- 1974 Ge y 2413785 ported over a planar surface by means of an extensible many and retractable fluid pressure driven piston. The mold 52 CL is movable relative to a compacting member which is Int 2 425/422 T Z Q E3Z mounted on a rotatable shaft which is disposed at an [58] Fie'ld S 418 422 angle to the normal to the surface of the mold. The 4 4 member has a conical bottom surface about which it is 1 2 wobbled, by a drive connection from a motor through a crank connected to the shaft, while the surface is positioned on the surface of the material being formed in [56] References Cnted the mold during operation. The motor which carries UNITED STATES PATENTS the member is adjustably mounted for movement 839,782 12/1906 Pauly et al. 425/356 toward and away from the mold and a stop is provided 18; 132i v iil gig; for engagement with the member to prevent its rotaa ar 3,345,684 /1967 Scherrer-Wirz 425/418 non dunng ts movement 3,827,847 8/1974 Weaver 425/443 17 Claims, 5 Drawing Figures l l 29 I 2 0 2 7 38 2 8 25 ,9 o p17 11 a 23 so 12 15 1 4 L \l K/ US. Patent Dec. 9, 1975 Sheet 1 of 3 3,925,000

Sheet 2 of 3 3,925,000

US. Patent D 9, 1975 U.S. Patent Dec. 9, 1975 Sheet 3 of3 3,925,000

MOLDING APPARATUS INCLUDING CONICALLY-SHAPED COMPACTING MEMBER BACKGROUND OF THE INVENTION 1. Field of the Invention This invention relates in general to the construction of devices for compacting moldable material particularly concrete wherein the concrete is compacted and formed by a compacting member which is mounted on a shaft disposed at an angle to the normal of the surface of the mold and revolves by a crank connection so that a bottom conical surface of the member contacts the moldable material in the mold during its resultant wobbling movement.

2. Description of the Prior Art To permit a transportation of plate-shaped structural parts made of fresh concrete and frequently intended to be stored and dried on grates or plane surfaces, it is necessary to compact the fresh concrete filled into a mold. In such a case, air trapped in the still soft and fluid conglomerate of cement and aggregates and perhaps even water is pressed out within a short time so that the plates can be removed from the mold and stored for drying.

Up to date, the compacting has been made by means of large hydraulic presses or with rams having a form of sledge hammers. Aside from a very expensive construction of such a machine, a great deal of noise is produced, particularly by the considerably annoying sledge hammers, not only to the operators of the machine, but also to those in the near vicinity of the plate producing plant. In consequence, expensive noisereducing measures become frequently unavoidable and must be included into the cost price of the plates, which also applies to the high costs of the machines. In addition, the compacting of the concrete often takes a considerable time so that an economical production is hardly obtainable.

It is further known, in the preparing of casting patterns, to compact the molding sand filled into the casting box by shaking or multiple pushing. To this end, the casting box is subjected to short oscillations or is lifted and dropped by means of hydraulic or pneumatic presses whereby a compacting is obtained. However, in this case again, the noise produced is considerable and annoying, and the compacting procedure requires a great amount of time because additional molding sand must frequently be filled in.

SUMMARY OF THE INVENTION The invention is directed to a compacting device which does not have the drawbacks inherent in the comparable compacting devices knrown from the prior art. The intended purpose is primarily to compact fresh concrete or other pourable, compactable or moldable materials in a substantially noiseless manner and in a short time. At the same time, the expenses of the construction of such a compacting device is relatively small and the design permits an easy subsequent mounting into machines equipped with sledge hammers.

In accordance with the invention, this is achieved by a device which includes a ram or compacting member acting on the material to be compacted or formed, and which is a rotatably mounted member or plate which, on its side facing the material to be compacted or formed, comprises a conical front surface and which is carried on a shaft which is positioned at an angle to the normal to the mold surface and which is connected to a drive shaft of an adjustable drive motor.

If planar plates are to be manufactured, it is useful to position the compacting member obliquely to the axial direction so that its respective surface line acting on the fresh concrete extends approximately perpendicularly to the drive shaft.

Also, in order to be able to control the degree of compacting, it is useful to associate with the molding box and/or the disc servo mechanisms for moving them relatively in axial directions and designed, for example, as power cylinders so that the pressure forces acting on the fresh concrete may be adjusted.

Furthermore, the shape of the compacting member should be conformable to the inside shape of the molding box and the member should be mounted on the crank connected to the drive shaft rotatably, for example, by means of antifriction bearings. If necessary, a lock against turning is to be provided ensuring that the whole surface of a plate is contacted by the member and a taking along of the molding box is prevented.

To facilitate the filling of the molding box with fresh concrete and the removal of the compacted structural parts, the molding box and/or the member with the drive motor should be mounted vertically adjustable, and the molding box should be provided with an ejector.

A device for compacting or forming pourable, compactable or moldable materials capable of being molded in molding boxes or dies or the like and compactable or formable in the same by means of rams, designed in accordance with the invention, is characterized not only by a simple design and thereby low constructional and manufacturing costs but, primarily, by the absence of percussive pressure forces to which the material to be compacted or formed would be subjected and, consequently, annoying noises caused thereby. That is, a design of the ram as a member having a bottom engagement surface which is at least partly conical and positioned obliquely to the axial direction makes it possible to press trapped air out from the material, such as fresh concrete, by a wobbling motion whereby an almost uniform pressure is exerted on the material.

In accordance with this design, the compactor mounted on a crank does not rotate, but is moved, due to the rotating crank, in the manner of a wobble plate and pressed against the fresh concrete. Thereby, the air trapped in the material is rapidly squeezed out so that the fresh concrete is compacted in a short time. The degree of compacting can be adapted to the requirements of each case in a simple manner by controlling it as a function of the pressure exerted on the fresh concrete through the member and of the time of fulling. Moreover, since the inventive compacting device is made of a small number of individual parts, it can be mounted subsequently into otherwise designed compacting machines without any difficulty.

The invention is further directed to a device permitting the compacting of almost any pourable and compactable material without problems as well as to easily form and, particularly, compact masses having large surfaces. The costs of construction should be small and, in addition, even a compacting of large parts must be made possible in a short time.

This is obtained by providing, in each case, a plurality of rams for compacting of pourable and compactable materials of any nature and for forming of plastic masses, particularly such having large surfaces, and by providing the rams with square, rectangular, polygonal or plate form acting on the material to be compacted and arranged closely side by side.

It is particularly advantageous in this case to mount all of the compacting members conjointly on a supporting frame or plate and to interlock them and to provide one or more servo mechanisms in the form of a piston mounted in a cylinder and movable by a pressure fluid, the movable member being applied against the supporting frame carrying the members or the plate, for advancing the frame to the material.

It is also useful to drive the members of the rams of a compacting device individually, in groups or conjointly; to prevent the formatioon of gaps and to compensate the forces mutually, the members immediately adjacent each other of the rams should be driven in opposite directions and in synchronism.

To obtain a synchronous drive in opposite direction of the members, it is useful to provide a gear on each of the drive shafts meshing with one or more of the gears associated with the immediately adjacent members. However, it is also possible to provide another drive, for example, individually or conjointly controllable hydraulic motors, each mounted on the drive shaft of one of the members.

The further development of the invention not only provides for the advantages of a simpler design with no percussive pressure forces, absence of annoying noises, small expenses of construction, squeezing out of the air or compacting or molding by fulling motions of the members or plates, but makes it possible to compact in a short time, and without any difficulties, pourable materials of and kind and, in particular, masses having large surfaces. That is, if two or more members or plates mounted obliquely to the axial direction are arranged closely adjacent each other, it is possible to keep the lateral forces acting on the molding boxsmall during the compacting, because if the members are driven in mutually opposite directions of rotation, the acting forces of the compacting members compensate each other almost entirely. Consequently, the lateral forces are very small so that an overstressing is hardly possible and the molding boses are not to be dimensioned for particularly strong stresses.

Since the individual members can be of small dimensions, only very small bending moments occur, which are easily controlled. Thus, in view of this very advantageous application of the invention to the treating of masses with large surfaces, the necessary expenses of the construction are also very small.

Above all, a device designed in accordance with the invention reliably avoids oscillations. That is, the forces acting on the material to be compacted are transmitted through a plurality of members or plates so that the specific surface pressure can be considerably reduced and a chattering is eliminated. In consequence, the surface of the material to be compacted is not affected and it is rather possible to compact rapidly also large parts while maintaining their surface completely smooth.

Since the forces are being resolved into several partial forces, the adjustment angles of the individual compactors can be larger than if only a single member is used. It is thereby obtained that the pressure cone becomes narrower and the compacting is improved.

A device in accordance with the invention makes it possible to compact and mold not only articles of plastic masses, such as concrete, lime, sand mixtures, plaster mixtures and other mixtures or mortar, but almost any material. An advantageous application is therefore the manufacture of sidewalk plates of any kind, cleavage stone blanks, gutter stone plates, boundary stones, curbstones, paving stones, building stones, etc. as well as compacting of sand in casting molds, in the hammer forging and pressing, and, inter alia, also in the ore dressing and similar treatments requiring a compacting or molding. While applying the invention to the compacting of molding sand, it has been found particularly advantageous that due to the fulling, sand is displaced laterally and flows. In this way, it is not difficult to obtain a sufficient hardness of the molding sand in a short time.

Accordingly, it is an object of the invention to provide an improved compacting and fulling device for compacting moldable materials in a mold and which includes a compacting member which is carried on a shaft disposed at an angle to the normal to the mold surface and which is revolved by its associated drive motor through a path to cause its bottom conical surface to perform a wobble movement in the material of the mold.

A further object of the invention is to provide a device for compacting material in a mold, such as concrete, which includes a compactor carried on a shaft disposed at an angle to the normal to the surface of the mold and connected by a crank to a drive motor to revolve it through a path, and which includes a bottom engagement surface which is at least partly conical and which is engaged with the material in the mold and wherein the motor and the mold are mounted for relative movement toward and away from each other.

A further object of the invention is to provide a compacting device which includes a plurality of compacting members having conical bottom faces which are mounted to revolve about an axis inclined relative to the surface of material to be compacted and which are driven from a common drive motor through a gear connection and which are mounted for displaceable movement relative to a mold so as to position the conical surface of the compacting member for wobble-type engagement with the material of the mold during its driving motion.

A further object of the invention is to provide a compacting device which is simple in design, rugged in construction and economical to manufacture.

For an understanding of the principles of the invention, reference is made to the following description of typical embodiments thereof as illustrated in the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS In the Drawings:

FIG. 1 is a vertical sectional view of a compacting device constructed in accordance with the invention;

FIG. 2 is a top plan view of the compacting member and mold shown in FIG. 1;

FIG. 3 is a view similar to FIG. 1 of another embodiment of the invention;

FIG. 4 is a partial top plan view of the revolving compacting member and mold shown in FIG. 3; and

FIG. 5 is a schematic top plan view of another em bodiment of drive construction for the compactors.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings in particular, the invention embodied therein, comprises in FIGS. 1 and 2, the compacting device for moldable materials, generally designated 1, which is particularly designed for compacting fresh concrete 2 in a mold or casting box 11 which is supported on a planar surface 4. The device includes a ram, generally designated 21 in the form of a compactor or compacting member 22 which acts on the surface 3 of the concrete 2.

In accordance with the invention, the compacting member 22 is provided with a bottom engagement surface 23 which is at least partly conical. It is carried on antifriction bearings on a shaft 90 which is disposed at an angle a from the normal to the surface 3 of the material in the mold 11. The member 22 may advantageously be mounted for rotation in antifriction bearings 25 which are received in a recess 26 of the member. The shaft 90 is connected to a crank 24 which is carried on a drive shaft 28 driven by a motor 27. The rotation of the drive shaft 28 of the motor 27 causes a revolving movement of the member 22 and a wobbling engagement of its surface 23 with the surface 3.

In accordance with another feature of the invention, the member 22 and the mold 11 are mounted for relative movement toward and away from each other by means of a piston and cylinder combination comprising a relatively movable piston 13 and cylinder 12. To provide for the exertion of a pressure on the fresh concrete 2 during the compacting, the cylinder 12 is flanged to casting box 11 and a piston 13 is received therein. When a pressure fluid is supplied to the pressure space 16 through line 17, the molding box 11 is pressed against the member 22, because piston 13 applies, through a leg 15 mounted on piston rod 14, against the plane surface 4. At the lowering, i.e., venting of pressure space 16 the cylinder 12 with the mold 11 and the piston 13 and an ejector 18, mounted on piston 13 move relatively so that the piston enters opening 80 and acts on the plate 19 which is loosely placed in molding box 11 so that the compacted plate is automatically elevated relative to the mold l1 and can be removed.

Member 22 is also mounted displaceable relative to molding box 11. To this end, motor 27 is supported by means of side bars 30 on a machine rack 29 and is vertically displaceable thereon, and the shaft of motor 27 carries a piston 32 received in a cylinder 31 which is fixed by means of side bars 34. As soon as a working fluid is supplied into the pressure space 33, motor 27 and, along therewith, member is pressed against the fresh concrete 2.

As may be seen particularly in FIG. 2, member 22 conforms to the outer shape of molding box 11, and is positioned at an angle a relative to the axial direction by means of crank 24. The angle of inclination a is chosen so that the surface line 23' of the conical surface 23, contacting the surface 3 of fresh concrete 2, extends perpendicularly to the axial direction and, consequently, a plane surface is produced by the fulling motion. Of course, another inclination may be used, for example, construction parts having a vaulted surface.

To prevent taking along the member 22 or even of the molding box 11 while motor 27 is running, a locking mechanism 35 is provided. This mechanism comprises a lever 38 fixed to member 22 laterally, which is 6 displaceably held to prevent revolution of the member 22 between stationary guide members 36 and 37 and is also vertically adjustable along the guide members. The action of any torque on molding box 11 is thereby eliminated.

If molding box 11 is filled with fresh concrete 2, and member 22 is pressed against fresh conrete 2 with the aid of pressure cylinders 12 and/or 31 and driven by motor 27, fresh concrete 2 is compacted in a short time without producing annoying noise of the machine or even percussive noises. That is, by the drive motor 27, member 22 is put into a wobbling motion, such that pressure is exerted on the fresh concrete 2 in a revolving motion. Thereby, the fresh concrete 2 is intensely and well fulled so that the air trapped in the conglomerate of cement and solids is squeezed out and the concrete is compacted. After the compaction is terminated, pressure fluid is directed into pressure space 16 to lower the molding box 11 and thereby make it possible to easily remove the compacted concrete plate from the molding box 11 by means of the ejector 18.

The embodiment shown in FIGS. 3 and 4 comprises a compactor, generally designated 51, for compacting fresh concrete 52 or other pourable materials. It comprises a molding box 61 placed on a plane surface 54 and filled with concrete 52 to be compacted, and a plurality of compacting members or rams 62, 62, 62", 62", etc. acting on the surface 53 of conrete 52. Each ram 63 is provided with a conical surface 64 and is rotatably mounted on a shaft 90 set in a position inclined by an angle a to the normal to the surface 53. The ram is supported by means of antifriction bearings 66 received in a recess 67 on shaft 90' which is carried on a crank 65 which is drivable off a motor 71.

The cranks 65 are rotatably retained in a vertically movable plate 70 by means of shafts 68 and bearings 69. Each shaft 68 carries a gear 74 fixed thereon against rotation and meshing with the gears of the neighboring discs so that the respective members are driven in synchronism and in opposite direction to each other. The output shaft 73 of motor 71, which is displaceably suspended from a machine rack 72, serves at the same time as a driving shaft for the ram 62'.

To permit advancement of plate 70, which is guided on bars 80, relative to molding box 61, servo mechanisms or fluid drive motors 75 are provided, in the form of pistons 77, received in cylinders 76. In operation, cylinder 76 applies against a stationary structural part 55 while piston 77, upon supplying pressure fluid into the pressure space 78, acts on plate 70 so that the rams 63 which are non-displaceably retained therein are pressed against the concrete 52 to be compacted. After venting of pressure space 78, rams 62 are automatically lifted by means of return springs 79.

If the molding box 61 is filled with fresh concrete 52 and the rams 63 are pressed against fresh concrete 52 by means of servo mechanisms 75, and cranks 65 of the members are driven by motor 71, even the fresh concrete extending in a mold over a large surface area is compacted within a short time without producing annoying machine noise or even percussive noises. That is, the rams are put in mutually synchronous wobble motions so that in a revolving movement, pressure is exerted on the fresh concrete 52. Thereby, the concrete is intensely and well fulled so that trapped air is pressed out and the concrete is compacted.

Since cranks 65 are driven by gears 74 in mutually opposite directions, the pressure cones rotate also in rams 62 are overstressed. Moreover, due to the use of a plurality of rams, a compacting of eaven large-surface structural parts can be effected in a short time.

As shown in FIG. 5, cranks 65 may also be driven through shafts 68 by means of controllable hydraulic motors 81. In such a case, the hydraulic motors 81 are flanged to the shafts 68 and communicate, through a control device 83, with a pressure fluid delivering device 82 so that rams 62 can be controlled individually in a simple manner and in accordance with the actual requirements.

While specific embodiments of the invention have been shown and described in detail to illustrate the application of the principles of the invention, it will be understood that the invention may be embodied otherwise without departing from such principles.

What is claimed is:

l. A device for compacting and forming pourable, compactable or moldable materials which are formed in molds, particularly for compacting fresh concrete, comprising a forming mold, support means for supporting said forming mold, a compacting member having a bottom material contacting surface which is at least partly conical, a support shaft rotatably supporting said compacting member, said support shaft having an axis line intersecting the apex of said conical surface and inclined from the normal to the surface of said mold and the material being compacted therein, a motor driven rotatable crank connected to said support shaft and being rotatable about an axis normal to the surface of said mold and intersecting the apex of the conical surface to revolve said support shaft and to cause said compacting member to wobble about the apex of said conical surface, said compacting member conical surface being engageable on the surface of the material during its wobbling movement.

2. A device according to claim 1, wherein said motor driven rotatable crank includes a drive motor having a drive shaft, said drive shaft having an axis substantially perpendicular to the material being treated in the mold.

3. A device according to claim 1, wherein said rotatably driven crank and said mold are relatively movable in directions toward and away from each other.

4. A device according to claim 3, wherein said motor driven rotatable crank includes a drive motor having a drive shaft connected to said support shaft, and means for mounting said motor for displaceable movement with said compacting member toward and away from the mold.

5. A device according to claim 4, including a mold support for said mold wherein said means for supporting said mold include a fluid pressure operated relatively movable piston and cylinder combination which are relatively displaceably connected between said mold and a mold support therefor for shifting said mold toward and away from said compacting member.

6. A device according to claim I, wherein said mold has a rectangular configuration, said compacting member having substantially rectangular sides.

7. A device according to claim 1, wherein said support means includes an upright ejector rod, a fluid cylinder engaged around said rod and secured below said mold, said mold having an opening therethrough for the passage of said rod, and a piston in said cylinder,

said cylinder and piston being relatively movable in response to fluid pressure for elevating and lowering said mold relative to said rod, said rod being movable relative to said mold thereby through an opening of said mold to eject the cast article from the mold after it is finished.

8. A device according to claim 7, including a plurality of compacting members, each adjacent compacting member being driven in respective opposite rotational directions.

9. A device according to claim 1, including a plurality of rotatable compacting members, each having a support shaft and a crank connected to said support shaft to revolve it, said compacting members being arranged side by side and acting upon the material in the mold together.

10. A device according to claim 9, wherein said cranks are driven by rotatable hydraulic motors.

11. A device according to claim 9, including a drive shaft connected to each of said cranks, a common support plate for rotatably mounting said drive shafts, a motor overlying said support plate, means for moving said motor upwardly and downwardly said motor being connected to drive said drive shafts and said cranks conjointly, said plate being movable toward and away from said mold for shifting said drive shafts with the compacting member relative to said mold.

12. A device according to claim 11, wherein said means for moving said support plate comprises at least one fluid pressure driven motor.

13. A device according to claim 11, wherein said crank drive shafts include a gear affixed thereto, said gears of adjacent drive shafts being in meshing engagement and said motor being connected to drive at least one of said gears.

14. A device according to claim 11, wherein said compacting members are all driven in synchronism.

15. A device according to claim 14, wherein said compacting members each have a crank shaft with a gear affixed thereto which is in meshing engagement with at least one of the gears of the adjacent crank shafts.

16. A device for compacting and forming pourable, compactable or moldable materials which are formed in molds, particularly for compacting fresh concrete, comprising a forming mold, support means for supporting said forming mold, a compacting member having a bottom material contacting surface which is at least partly conical, a support shaft rotatably supporting said compacting member, said support shaft having an axis line intersecting the apex of said conical surface and inclined from the normal to the surface of said mold and the material being compacted therein, a motor driven rotatable crank connected to said support shaft and being rotatable about an axis normal to the surface of said mold and intersecting the apex of the conical surface to revolve said support shaft and to cause said compacting member to wobble about the apex of said conical surface, said compacting member conical surface being engageable on the surface of the material during its wobbling movement, and locking means for locking said compacting member against rotation with respect to the mold.

17. A device according to claim 16, wherein said sup port shaft is mounted for movement toward and away from said mold, said locking means including an angularly fixed member connected to said compacting member to anchor it relative to said support shaft, and

guide means on each side of said angularly fixed member permitting up and down movement thereof. 

1. A device for compacting and forming pourable, compactable or moldable materials which are formed in molds, particularly for compacting fresh concrete, comprising a forming mold, support means for supporting said forming mold, a compacting member having a bottom material contacting surface which is at least partly conical, a support shaft rotatably supporting said compacting member, said support shaft having an axis line intersecting the apex of said conical surface and inclined from the normal to the surface of said mold and the material being compacted therein, a motor driven rotatable crank connected to said support shaft and being rotatable about an axis normal to the surface of said mold and intersecting the apex of the conical surface to revolve said support shaft and to cause said compacting member to wobble about the apex of said conical surface, said compacting member conical surface being engageable on the surface of the material during its wobbling movement.
 2. A device according to claim 1, wherein said motor driven rotatable crank includes a drive motor having a drive shaft, said drive shaft having an axis substantially perpendicular to the material being treated in the mold.
 3. A device according to claim 1, wherein said rotatably driven crank and said mold are relatively movable in directions toward and away from each other.
 4. A device according to claim 3, wherein said motor driven rotatable crank includes a drive motor having a drive shaft connected to said support shaft, and means for mounting said motor for displaceable movement with said compacting member toward and away from the mold.
 5. A device according to claim 4, including a mold support for said mold wherein said means for supporting said mold include a fluid pressure operated relatively movable piston and cylinder combination which are relatively displaceably connected between said mold and a mold support therefor for shifting said mold toward and away from said compacting member.
 6. A device according to claim 1, wherein said mold has a rectangular configuration, said compacting member having substantially rectangular sides.
 7. A device according to claim 1, wherein said support means includes an upright ejector rod, a fluid cylinder engaged around said rod and secured below said mold, said mold having an opening therethrough for the passage of said rod, and a piston in said cylinder, said cylinder and piston being relatively movable in response to fluid pressure for elevating and lowering said mold relative to said rod, said rod being movable relative to said mold thereby through an opening of said mold to eject the cast article from the mold after it is finished.
 8. A device according to claim 7, including a plurality of compacting members, each adjacent compacting member being driven in respective opposite rotational directions.
 9. A device according to claim 1, including a plurality of rotatable compacting members, each having a support shaft and a crank connected to said support shaft to revolve it, said compacting members being arranged side by side and acting upon the material in the mold together.
 10. A device according to claim 9, wherein said cranks are driven by rotatable hydraulic motors.
 11. A device according to claim 9, including a drive shaft connected to each of said cranks, a common support plate for rotatably mounting said drive shafts, a motor overlying said support plate, means for moving said motor upwardly and downwardly said motor being connected to drive said drive shafts and said cranks conjointly, said plate being movable toward and away from said mold for shifting said drive shafts with the compacting member relative to said mold.
 12. A device according to claim 11, wherein said means for moving said support plate comprises at least one fluid pressure driven motor.
 13. A device according to claim 11, wherein said crank drive shafts include a gear affixed thereto, said gears of adjacent drive shafts being in meshing engagement and said motor being connected to drive at least one of said gears.
 14. A device according to claim 11, wherein said compacting members are all driven in synchronism.
 15. A device according to claim 14, wherein said compacting members each have a crank shaft with a gear affixed thereto which is in meshing engagement with at least one of the gears of the adjacent crank shafts.
 16. A device for compacting and forming pourable, compactable or moldable materials which are formed in molds, particularly for compacting fresh concrete, comprising a forming mold, support means for supporting said forming mold, a compacting member having a bottom material contacting surface which is at least partly conical, a support shaft rotatably supporting said compacting member, said support shaft having an axis line intersecting the apex of said conical surface and inclined from the normal to the surface of said mold and the material being compacted therein, a motor driven rotatable crank connected to said support shaft and being rotatable about an axis normal to the surface of said molD and intersecting the apex of the conical surface to revolve said support shaft and to cause said compacting member to wobble about the apex of said conical surface, said compacting member conical surface being engageable on the surface of the material during its wobbling movement, and locking means for locking said compacting member against rotation with respect to the mold.
 17. A device according to claim 16, wherein said support shaft is mounted for movement toward and away from said mold, said locking means including an angularly fixed member connected to said compacting member to anchor it relative to said support shaft, and guide means on each side of said angularly fixed member permitting up and down movement thereof. 